I just started buying EZ Lock blades for my Dremel. You really should too.
You have to buy the special adapter for them (adapter included in pic), but they are FAR better than reinforced blades. One EZ Lock blade lasts as long as 3 or 4 reinforced blades used to last. I highly recommend them. This is coming from someone who's constantly cutting something with my dremel.
Now it takes me less than 10 seconds to change out blades!